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Keystone MicrotechROCO:6683 -8.16%79 PB Ratio is 13.66 as of Jul. 16, 2026, which is 248% above its 10-year median of 3.93. GuruFocus rates ROCO:6683 with a GF Score™ of 79/100 and a GF Value™ of NT$486.03 (Significantly Overvalued). The stock has 2 warning signs investors should review. Among 998 Semiconductors companies, Keystone Microtech ranks worse than 91.08% on this metric.
The historical rank and industry rank for Keystone Microtech's PB Ratio or its related term are showing as below:
ROCO:6683'
s PB Ratio Range Over the Past 10 Years
Min: 2 Med: 3.93 Max: 22.37
Current: 13.67
During the past 12 years, Keystone Microtech's highest PB Ratio was 22.37. The lowest was 2.00. And the median was 3.93.
ROCO:6683's PB Ratio is ranked worse than 91.08% of 998
companies
in the Semiconductors industry
Industry Median: 3.455
vs ROCO:6683: 13.67
During the past 12 months, Keystone Microtech's average Book Value Per Share Growth Rate was 6.20% per year.
During the past 3 years, the average Book Value Per Share Growth Rate was 9.30% per year.
During the past 5 years, the average Book Value Per Share Growth Rate was 10.90% per year.
During the past 10 years, the average Book Value Per Share Growth Rate was 15.30% per year.
During the past 12 years, the highest 3-Year average Book Value Per Share Growth Rate of Keystone Microtech was 20.50% per year. The lowest was 9.30% per year. And the median was 16.15% per year.
Back to Basics: PB Ratio
Keystone Microtech (ROCO:6683) PB Ratio Explanation
The PB Ratio works the best for the businesses that earn most of their profit from their assets, e.g. banks and insurance companies.
Be Aware
Some businesses have very light assets, such as software companies or insurance agencies. The PB Ratio does not work well for these companies. Some companies even have negative equity, so the PB Ratio cannot be applied to them.
Keystone Microtech PB Ratio Related Terms
Keystone Microtech PB Ratio Historical Data
* Premium members only.
The historical data trend for Keystone Microtech's PB Ratio can be seen below:
* For Operating Data section: All numbers are indicated by the unit behind each term and all currency related amount are in USD. * For other sections: All numbers are in millions except for per share data, ratio, and percentage. All currency related amount are indicated in the company's associated stock exchange currency.
ROCO:6683 vs AMAT, LRCX, KLAC: PB Ratio Comparison
For the Semiconductor Equipment & Materials subindustry, Keystone Microtech's PB Ratio, along with its competitors' market caps and PB Ratio data, can be viewed below:
* Competitive companies are chosen from companies within the same industry, with headquarter located in same country, with closest market capitalization; x-axis shows the market cap, and y-axis shows the term value; the bigger the dot, the larger the market cap. Note that "N/A" values will not show up in the chart.
Keystone Microtech PB Ratio vs Semiconductors Industry
For the Semiconductors industry and Technology sector, Keystone Microtech's PB Ratio distribution charts can be found below:
* The bar in red indicates where Keystone Microtech's PB Ratio falls into.
The PB Ratio, or Price-to-Book ratio, or Price/Book, is a financial ratio used to compare a company's market price to its Book Value per Share. It is a ratio widely used to value stocks.
* For Operating Data section: All numbers are indicated by the unit behind each term and all currency related amount are in USD. * For other sections: All numbers are in millions except for per share data, ratio, and percentage. All currency related amount are indicated in the company's associated stock exchange currency.
It can also be calculated from the numbers for the whole company:
A closely related ratio is called Price-to-Tangible-Book. The difference between Price-to-Tangible-Book and PB Ratio is that book value other than intangibles are used in the calculation.
Keystone Microtech (ROCO:6683) has a PB Ratio of 13.66 as of Jul. 16, 2026. Price-to-Book ratio is the ratio of share price to a company's book value per share. View historical data on Keystone Microtech and its competitors. This is 248% above median its historical median of 3.93. Over the past decade, Keystone Microtech's PB Ratio has ranged from 2.00 to 22.37. According to the industry distribution chart, Keystone Microtech ranks #909 out of 998 companies in the Semiconductors industry, placing it in the top 91.1%.
Is Keystone Microtech's PB Ratio too high?
Keystone Microtech's current PB Ratio of 13.66 is 248% above median its 10-year median of 3.93. Over the past 10 years, this metric has ranged from a low of 2.00 to a high of 22.37. The Semiconductors industry median PB Ratio is 3.46. Keystone Microtech's value of 13.66 is 295.4% above this industry median. Based on the distribution chart, Keystone Microtech ranks #909 out of 998 companies in the Semiconductors industry, which is in the bottom quartile relative to peers. Overall, Keystone Microtech has a GF Score™ of 79/100 and is considered Significantly Overvalued, reflecting its overall financial health beyond just this single metric.
How does Keystone Microtech's PB Ratio compare to AMAT and LRCX?
According to the Semiconductors industry distribution chart, Keystone Microtech ranks #909 out of 998 companies for PB Ratio. This places Keystone Microtech in the lower half of its industry. The industry median PB Ratio is 3.46. Keystone Microtech's value of 13.66 is 295.4% above this benchmark. Historically, Keystone Microtech's own PB Ratio has ranged from 2.00 to 22.37 over the past decade. While the company's 10-year median is 3.93 vs. the industry median of 3.46, Keystone Microtech has consistently been above the industry average. See the competitive comparison table and distribution chart on this page for a detailed peer-by-peer breakdown.
What is a good PB Ratio for a Semiconductors company?
The median PB Ratio among Semiconductors companies is 3.46, based on 998 companies in the industry. Companies in the top quartile (top 25%) have a PB Ratio significantly above this median, while those in the bottom quartile fall well below. However, PB Ratio should not be evaluated in isolation — investors should consider it alongside profitability, growth, and financial strength metrics. Keystone Microtech's current PB Ratio of 13.66 is 295.4% above the industry median. Use the industry distribution chart on this page to see where any company falls relative to its peers.
What does a high PB Ratio mean?
A high PB Ratio can signal that a stock is expensive relative to its fundamentals. Price-to-Book ratio is the ratio of share price to a company's book value per share. View historical data on Keystone Microtech and its competitors. For the Semiconductors industry, the median PB Ratio is 3.46 — values significantly above this may indicate overvaluation, while values below may suggest a bargain or underlying issues. Keystone Microtech's current PB Ratio is 13.66, which is 248% above median its own 10-year median of 3.93. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is Keystone Microtech stock overvalued right now?
Based on GuruFocus' analysis, Keystone Microtech (ROCO:6683) is currently considered Significantly Overvalued. The stock's GF Value™ is NT$486.03, compared to a current price of NT$1,350.00 — trading 177.8% above its estimated fair value. The current PB Ratio is 13.66, which is 248% above median its 10-year median of 3.93 and 295.4% above the Semiconductors industry median of 3.46. Keystone Microtech's overall GF Score™ is 79/100 with 2 warning signs to review. Investors should evaluate multiple metrics — including profitability, growth, and financial strength — before making a decision.
How is PB Ratio calculated?
PB Ratio is calculated from a company's financial statements. For Keystone Microtech (ROCO:6683), the current PB Ratio is 13.66 as of Jul. 16, 2026. GuruFocus calculates this using data sourced from SEC filings and annual reports. See the calculation section and 30-year financial data on this page for the full breakdown.
Is Keystone Microtech (ROCO:6683) Overvalued in 2026?
Based on GuruFocus' analysis, Keystone Microtech stock appears to be overvalued.
The current stock price of NT$1,350.00 is trading 177.8% above its estimated GF Value™ of NT$486.03.
GuruFocus considers Keystone Microtech to be Significantly Overvalued.
Key valuation signals for ROCO:6683:
PB Ratio: 13.66 (248% above median its 10-year median of 3.93)
GF Value™: NT$486.03 vs. price of NT$1,350.00 (177.8% above fair value)
Industry Position: 295.4% above the Semiconductors median (#909 of 998)
No single metric tells the full story. See the ROCO:6683 stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.
Keystone Microtech Corp operates as a semiconductor device manufacturing company. The company is mainly an important operating department engaged in the manufacture and sale of various circuit testing solutions for semiconductors, including IC front-end test solutions (probe cards and substrates), IC back-end test solutions (load boards and burn-in boards), and other related testing boards. Geographically, it operates in Taiwan and other regions, out of which the majority of its revenue is derived from Taiwan.
79GF Score
Get the complete analysis for ROCO:6683
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